The plasma cutting process, as the most cost-effective method of cutting a range of materials, is especially recommended for steel, stainless steel, aluminum or other alloys those are electrically conductive, not easily cut by conventional oxy-acetylene process. The combined effect of a high intensity arc and a hot, high velocity plasma gas results in a very clean, high speed cut including piercing, beveling and gouging. Please specify if air compressor built-in model is required, when ordering.